Dico 541-778-4 Nyalox Wheel Brush 4-Inch Orange 120 Grit Nylon bristles contain 180 grit abrasive Doesn't shed bristles: safer to use Maintains its shape: lasts longer than wire brushes 1/4" hex shank mandrel for usein all drills Ideal for paint or rust removal Last up to (10) times longer that Wire Brushes Convenient Shapes and Sizes for all jobs Gray-Extra CoarseOrange-Coarse and Blue-Fine Will not rust & maintains its shape. Safer to use. For moderate removal and cleaning of surface rust, corrosion, oxidation, and old paint from metals